Locks that work

I love a good anorak me. :-)

Glad to know that approximately 15mm is just not on, when 14.7mm is so much better.

That has given me a good laugh. :-) But well done anyway for illustrating it so precisely.

I think that was the first time I was able to use a few little calculations to make someone laugh. But if you are pleased, then I am pleased :).